Molecular formula
C19H26N4O2
246 compounds have this formula on CompoundList.
- Molar mass
- 342.44g/mol
- Monoisotopic mass
- 342.2056Da
- Atoms
- 51
- Elements
- 4
- Rings plus double bonds
- 9
The formula C19H26N4O2 describes a molecule made of 19 carbon atoms, 26 hydrogen atoms, 4 nitrogen atoms and 2 oxygen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 1966.64%12.011 × 19 = 228.209 g/mol
- H Hydrogen × 267.65%1.008 × 26 = 26.208 g/mol
- N Nitrogen × 416.36%14.007 × 4 = 56.028 g/mol
- O Oxygen × 29.34%15.999 × 2 = 31.998 g/mol
Look up another formula
Compounds with the formula C19H26N4O2
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 101 to 200 of 246 compounds
N-(3-Methyl-1-(2H-1,2,3-triazol-2-yl)butan-2-yl)-4-phenyltetrahydro-2H-pyran-4-carboxamide
CAS 2034267-04-2C19H26N4O2
![N-Cyclopentyl-2-ethoxy-N-{2-[3-(pyridin-4-yl)-1H-pyrazol-1-yl]ethyl}acetamide chemical structure, C19H26N4O2, CAS 2034327-04-1](/s/IMVVYRBOPKRHQK-UHFFFAOYSA-N.svg)
N-Cyclopentyl-2-ethoxy-N-{2-[3-(pyridin-4-yl)-1H-pyrazol-1-yl]ethyl}acetamide
CAS 2034327-04-1C19H26N4O2
![4-(3-(1H-Benzo[d]imidazol-1-yl)pyrrolidin-1-yl)-N-(tert-butyl)-4-oxobutanamide chemical structure, C19H26N4O2, CAS 2034559-79-8](/s/OMYHQDHIWFEEDG-UHFFFAOYSA-N.svg)
4-(3-(1H-Benzo[d]imidazol-1-yl)pyrrolidin-1-yl)-N-(tert-butyl)-4-oxobutanamide
CAS 2034559-79-8C19H26N4O2
![4-{3-[4-(3-Methylphenyl)piperazin-1-yl]propanoyl}morpholine-3-carbonitrile chemical structure, C19H26N4O2, CAS 2094634-05-4](/s/FKWNWACZRWSPKS-UHFFFAOYSA-N.svg)
4-{3-[4-(3-Methylphenyl)piperazin-1-yl]propanoyl}morpholine-3-carbonitrile
CAS 2094634-05-4C19H26N4O2
![4-[(4-{[(5,6-Dimethylpyrimidin-4-yl)oxy]methyl}piperidin-1-yl)methyl]-1-methyl-1,2-dihydropyridin-2-one chemical structure, C19H26N4O2, CAS 2320850-80-2](/s/CWWRBTFHGSCPIZ-UHFFFAOYSA-N.svg)
4-[(4-{[(5,6-Dimethylpyrimidin-4-yl)oxy]methyl}piperidin-1-yl)methyl]-1-methyl-1,2-dihydropyridin-2-one
CAS 2320850-80-2C19H26N4O2
3-Methyl-5-((4-(((5,6,7,8-tetrahydrocinnolin-3-yl)oxy)methyl)piperidin-1-yl)methyl)isoxazole
CAS 2309551-10-6C19H26N4O2
4-((4-(((6-Cyclobutylpyrimidin-4-yl)oxy)methyl)piperidin-1-yl)methyl)-5-methyloxazole
CAS 2309537-32-2C19H26N4O2
![4-Cyclobutyl-6-({1-[(2-methyl-1,3-oxazol-4-yl)methyl]piperidin-4-yl}methoxy)pyrimidine chemical structure, C19H26N4O2, CAS 2320143-41-5](/s/XJHNSDWNGDIGFJ-UHFFFAOYSA-N.svg)
4-Cyclobutyl-6-({1-[(2-methyl-1,3-oxazol-4-yl)methyl]piperidin-4-yl}methoxy)pyrimidine
CAS 2320143-41-5C19H26N4O2
![3-Cyclopropyl-6-({1-[(3,5-dimethyl-1,2-oxazol-4-yl)methyl]piperidin-4-yl}methoxy)pyridazine chemical structure, C19H26N4O2, CAS 2319850-54-7](/s/AQMFDWVOWCYIAR-UHFFFAOYSA-N.svg)
3-Cyclopropyl-6-({1-[(3,5-dimethyl-1,2-oxazol-4-yl)methyl]piperidin-4-yl}methoxy)pyridazine
CAS 2319850-54-7C19H26N4O2
tert-Butyl (4-(4-(1H-pyrazol-3-yl)pyrrolidin-3-yl)benzyl)carbamate
CAS 2804039-85-6C19H26N4O2
76QQ7Sdu32
CAS 2659308-44-6C19H26N4O2
![N-(1-Cyanocyclopentyl)-2-[4-(4-methoxyphenyl)piperazin-1-yl]acetamide chemical structure, C19H26N4O2, CAS 850350-33-3](/s/BFWHFUAJSXHKDP-UHFFFAOYSA-N.svg)
N-(1-Cyanocyclopentyl)-2-[4-(4-methoxyphenyl)piperazin-1-yl]acetamide
CAS 850350-33-3C19H26N4O2
![1-Cyclohexyl-3-ethyl-1-[[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl]urea chemical structure, C19H26N4O2, CAS 892711-98-7](/s/JBPKROBSKKVONC-UHFFFAOYSA-N.svg)
1-Cyclohexyl-3-ethyl-1-[[3-(3-methylphenyl)-1,2,4-oxadiazol-5-yl]methyl]urea
CAS 892711-98-7C19H26N4O2
![N-(1-Cyanocyclopentyl)-2-({[(2,6-dimethylphenyl)carbamoyl]methyl}(methyl)amino)acetamide chemical structure, C19H26N4O2, CAS 871092-34-1](/s/QZQIFNJYSQVXMR-UHFFFAOYSA-N.svg)
N-(1-Cyanocyclopentyl)-2-({[(2,6-dimethylphenyl)carbamoyl]methyl}(methyl)amino)acetamide
CAS 871092-34-1C19H26N4O2
![2-[4-(4-Acetylphenyl)piperazin-1-yl]-N-(1-cyano-1-methylethyl)-N-methylacetamide chemical structure, C19H26N4O2, CAS 1223236-49-4](/s/AMSRWALABOISGG-UHFFFAOYSA-N.svg)
2-[4-(4-Acetylphenyl)piperazin-1-yl]-N-(1-cyano-1-methylethyl)-N-methylacetamide
CAS 1223236-49-4C19H26N4O2
![N-(1-Cyanocyclopentyl)-2-({[(2,3-dimethylphenyl)carbamoyl]methyl}(methyl)amino)acetamide chemical structure, C19H26N4O2, CAS 949832-53-5](/s/VKQDTFNGLVMMBT-UHFFFAOYSA-N.svg)
N-(1-Cyanocyclopentyl)-2-({[(2,3-dimethylphenyl)carbamoyl]methyl}(methyl)amino)acetamide
CAS 949832-53-5C19H26N4O2
![1-(1-(1-Oxo-1-(pyrrolidin-1-yl)propan-2-yl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one chemical structure, C19H26N4O2, CAS 930480-67-4](/s/DETNBDAAMJKPIT-UHFFFAOYSA-N.svg)
1-(1-(1-Oxo-1-(pyrrolidin-1-yl)propan-2-yl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one
CAS 930480-67-4C19H26N4O2
![N,N-Dimethyl-1-({3-[4-(propan-2-yl)phenyl]-1,2,4-oxadiazol-5-yl}methyl)prolinamide chemical structure, C19H26N4O2, CAS 1093215-93-0](/s/BFJAHRYHQKWLNG-UHFFFAOYSA-N.svg)
N,N-Dimethyl-1-({3-[4-(propan-2-yl)phenyl]-1,2,4-oxadiazol-5-yl}methyl)prolinamide
CAS 1093215-93-0C19H26N4O2
![3-Butyl-1-(2-methoxyphenyl)-7,8-dimethyl-1,2,3,4-tetrahydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one chemical structure, C19H26N4O2, CAS 1158194-19-4](/s/IESJYPHVTAWPNV-UHFFFAOYSA-N.svg)
3-Butyl-1-(2-methoxyphenyl)-7,8-dimethyl-1,2,3,4-tetrahydro-6H-pyrimido[1,2-a][1,3,5]triazin-6-one
CAS 1158194-19-4C19H26N4O2
![3-[(4-Methoxy-3,5-dimethyl-2-pyridyl)methyl]-5,6-dimethyl-2-(1-pyrrolidinyl)-4(3H)-pyrimidinone chemical structure, C19H26N4O2, CAS 1340911-45-6](/s/JUJDQFWOPIZQFD-UHFFFAOYSA-N.svg)
3-[(4-Methoxy-3,5-dimethyl-2-pyridyl)methyl]-5,6-dimethyl-2-(1-pyrrolidinyl)-4(3H)-pyrimidinone
CAS 1340911-45-6C19H26N4O2
1-Ethyl-4-hydroxy-6-methyl-3-((4-methylpiperazin-1-yl)(pyridin-2-yl)methyl)pyridin-2(1H)-one
CAS 939242-16-7C19H26N4O2
tert-Butyl 4-(1-quinazolin-2-ylethyl)piperazine-1-carboxylate
CAS 1269430-79-6C19H26N4O2
2-(5-Acetyl-2,3,4,5-tetrahydro-1H-1,5-benzodiazepin-1-yl)-N-(1-cyano-1,2-dimethylpropyl)acetamide
CAS 1394790-84-1C19H26N4O2
4-Benzyl-N-(4-cyano-1-methylpiperidin-4-yl)morpholine-2-carboxamide
CAS 1394704-37-0C19H26N4O2
- Methanone, [2-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)-1-pyrrolidinyl][2,5-dimethyl-1-(1-methylethyl)-1H-pyrrol-3-yl]-1376013-53-4C19H26N4O2
- 2-(4-Ethoxyphenyl)-N-[1-(5-methyl-1H-pyrazol-3-yl)piperidin-4-yl]acetamide1902896-29-0C19H26N4O2
- 1-[2-(4-Methoxyphenyl)ethyl]-3-[4-(1H-pyrazol-1-yl)cyclohexyl]urea2097860-25-6C19H26N4O2
- 2-(11-Azidoundecyl)-2,3-dihydro-1H-isoindole-1,3-dione1363542-43-1C19H26N4O2
- 8-Cyclopentyl-2-[4-(hydroxymethyl)piperidin-1-yl]-5-methyl-7H,8H-pyrido[2,3-d]pyrimidin-7-one2415504-51-5C19H26N4O2
- (E)-4-(Dimethylamino)-N-[2-[4-[(1-methylimidazol-2-yl)methoxy]phenyl]ethyl]but-2-enamide2411331-87-6C19H26N4O2
- (2E)-4-(Dimethylamino)-N-methyl-N-[3-(3-methyl-2-oxo-1,2-dihydroquinoxalin-1-yl)propyl]but-2-enamide2411327-40-5C19H26N4O2
- 8-Cyclopentyl-2-(2,6-dimethylmorpholin-4-yl)-5-methyl-7H,8H-pyrido[2,3-d]pyrimidin-7-one2640966-21-6C19H26N4O2
- 2-Methoxy-1-{5-[1-(propan-2-yl)-1H-1,3-benzodiazol-2-yl]-octahydropyrrolo[3,4-c]pyrrol-2-yl}ethan-1-one2549013-78-5C19H26N4O2
- tert-Butyl 5-(1-methyl-1H-1,3-benzodiazol-2-yl)-octahydropyrrolo[3,4-c]pyrrole-2-carboxylate2549034-88-8C19H26N4O2
- N-(2,4-Dimethylphenyl)-4-[(5-methyl-3-isoxazolyl)methyl]-1-piperazineacetamide1208549-69-2C19H26N4O2
- 4-[2-[4-(4-Methoxyphenyl)-1-piperazinyl]ethoxy]-1,2-benzenediamine1026089-10-0C19H26N4O2
- 1-{1-[2-(5-Methoxy-1H-indol-3-yl)ethyl]piperidin-4-yl}imidazolidin-2-one61220-01-7C19H26N4O2
- (4-Benzylpiperazin-1-yl)(3-ethoxy-1-ethyl-1H-pyrazol-4-yl)methanone1014049-46-7C19H26N4O2
- N-[1-[(Tetrahydro-2H-pyran-2-yl)methyl]-4-piperidinyl]-1H-indazole-5-carboxamide478827-99-5C19H26N4O2
- 2-{4-[(2,5-Dimethoxyphenyl)methyl]piperazin-1-yl}-4,6-dimethylpyrimidine2877675-36-8C19H26N4O2
- N-[2-(4-Ethylpiperazin-1-yl)propyl]-5-phenyl-1,2-oxazole-3-carboxamide1018132-62-1C19H26N4O2
- N-[3-({[(1-Cyano-1-cyclopropylethyl)carbamoyl]methyl}amino)-4-methylphenyl]-2-methylpropanamide1252298-47-7C19H26N4O2
- tert-Butyl 4-(5-amino-1-phenyl-1H-pyrazol-3-yl)piperidine-1-carboxylate1414571-28-0C19H26N4O2
- tert-Butyl (s)-2-(5-amino-4-methyl-1-phenyl-1H-pyrazol-3-yl)pyrrolidine-1-carboxylate1414571-64-4C19H26N4O2
- 2-(3-((2-Amino-4-methyl-6-(pentylamino)pyrimidin-5-yl)methyl)phenyl)acetic acid1158805-08-3C19H26N4O2
- N-[5-(6-Oxo-3-phenylpyridazin-1(6H)-yl)pentyl]-N'-propan-2-ylurea88421-22-1C19H26N4O2
- tert-Butyl 4-(4-(4-aminophenyl)-1H-pyrazol-1-yl)piperidine-1-carboxylate1625680-76-3C19H26N4O2
- tert-Butyl 4-(1-quinoxalin-6-ylethyl)piperazine-1-carboxylate1884155-62-7C19H26N4O2
- tert-Butyl 3-(6-methyl-4-(1-methyl-1H-pyrazol-4-yl)pyridin-2-yl)pyrrolidine-1-carboxylate1905483-57-9C19H26N4O2
- Benzyl 3-(aminomethyl)-2-(2-methylpropyl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-7-carboxylate2059944-24-8C19H26N4O2
- Benzyl 3-(aminomethyl)-2-tert-butyl-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-7-carboxylate2060038-28-8C19H26N4O2
- Benzyl 4-(5-amino-3-isopropyl-1H-pyrazol-1-yl)piperidine-1-carboxylate2095097-42-8C19H26N4O2
- Benzyl 3-(5-amino-3-isopropyl-1H-pyrazol-1-yl)piperidine-1-carboxylate2095097-44-0C19H26N4O2
- 1-(1-(5-Oxa-2-azaspiro[3.4]octan-6-ylmethyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one2242137-31-9C19H26N4O2
- Benzyl 3-(aminomethyl)-2-(butan-2-yl)-5H,6H,7H,8H-imidazo[1,2-a]pyrazine-7-carboxylate2060032-01-9C19H26N4O2
- 2-Methyl-4-{[1-(1,3,5-trimethyl-1H-pyrazole-4-carbonyl)piperidin-4-yl]methoxy}pyridine2380060-29-5C19H26N4O2
- 4-Cyclobutyl-6-({1-[(3-methyl-1,2-oxazol-5-yl)methyl]piperidin-4-yl}methoxy)pyrimidine2379947-47-2C19H26N4O2
- 4-({1-[(5-Cyclopropyl-1,2-oxazol-3-yl)methyl]piperidin-4-yl}methoxy)-5,6-dimethylpyrimidine2379949-58-1C19H26N4O2
- tert-Butyl 3-amino-2-(3,5-dimethylphenyl)-2,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5-carboxylate2212021-29-7C19H26N4O2
- N-[(Oxolan-2-yl)methyl]-3-[2-(propan-2-yl)-1H-1,3-benzodiazol-1-yl]azetidine-1-carboxamide2415622-10-3C19H26N4O2
- 6-Cyclopropyl-3-[2-(3-{octahydrocyclopenta[c]pyrrol-2-yl}azetidin-1-yl)-2-oxoethyl]-3,4-dihydropyrimidin-4-one2415455-22-8C19H26N4O2
- 1,1-Dimethylethyl 3-[[4-[4-(aminomethyl)phenyl]-1H-pyrazol-1-yl]methyl]-1-azetidinecarboxylate2590559-44-5C19H26N4O2
- 3-[[(2R,5S)-3,6-Diethoxy-2,5-dihydro-5-(1-methylethyl)-2-pyrazinyl]methyl]-1H-pyrrolo[2,3-c]pyridine808145-91-7C19H26N4O2
- (3-Methoxy-4-methylphenyl){2-[5-(propan-2-yl)-4H-1,2,4-triazol-3-yl]piperidin-1-yl}methanone2187435-89-6C19H26N4O2
- 6-Amino-5-[[(trans-4-methylcyclohexyl)methyl]amino]-1-(phenylmethyl)-2,4(1H,3H)-pyrimidinedione1621225-02-2C19H26N4O2
- 1-(3-Cyano-4,6-dimethylpyridin-2-yl)-N-(oxan-4-yl)piperidine-3-carboxamide2877665-95-5C19H26N4O2
- 2-[1-(3-Cyano-6-methylpyridin-2-yl)piperidin-4-yl]-N-(oxan-4-yl)acetamide2877702-46-8C19H26N4O2
- 1-(1-Methyl-1H-1,3-benzodiazol-2-yl)-N-(oxan-4-yl)piperidine-3-carboxamide2877711-21-0C19H26N4O2
- 1-(2,4-Dimethylphenyl)-4-{[5-(oxolan-3-yl)-1,3,4-oxadiazol-2-yl]methyl}piperazine2877654-23-2C19H26N4O2
- 4-{4-[(2,5-Dimethoxyphenyl)methyl]piperazin-1-yl}-2,6-dimethylpyrimidine2877702-36-6C19H26N4O2
- N-tert-Butyl-1-(3-methyl-4-oxo-3,4-dihydroquinazolin-2-yl)piperidine-3-carboxamide2877709-27-6C19H26N4O2
- 4-{4-[(2,5-Dimethoxyphenyl)methyl]piperazin-1-yl}-5,6-dimethylpyrimidine2877686-52-5C19H26N4O2
- 1-(1-(Azepane-4-carbonyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one2921321-49-3C19H26N4O2
- N-Butyl-N'-[4-(6-oxo-3-phenylpyridazin-1(6H)-yl)butyl]urea87653-26-7C19H26N4O2
- N-[5-(6-Oxo-3-phenylpyridazin-1(6H)-yl)pentyl]-N'-propylurea87653-42-7C19H26N4O2
- N-Ethyl-N'-[6-(6-oxo-3-phenylpyridazin-1(6H)-yl)hexyl]urea87653-51-8C19H26N4O2
- N-Methyl-N'-[7-(6-oxo-3-phenylpyridazin-1(6H)-yl)heptyl]urea87653-54-1C19H26N4O2
- N,N-Diethyl-N'-[4-(6-oxo-3-phenylpyridazin-1(6H)-yl)butyl]urea87653-36-9C19H26N4O2
- N,N-Dimethyl-N'-[6-(6-oxo-3-phenylpyridazin-1(6H)-yl)hexyl]urea87653-52-9C19H26N4O2
- 1-{1-[2-(7-Methoxy-1H-indol-3-yl)ethyl]piperidin-4-yl}imidazolidin-2-one61220-16-4C19H26N4O2
- tert-Butyl ((1-(quinoxalin-2-yl)piperidin-3-yl)methyl)carbamate1420901-63-8C19H26N4O2
- tert-Butyl 4-((quinoxalin-2-ylamino)methyl)piperidine-1-carboxylate1420867-91-9C19H26N4O2
- tert-Butyl 3-((quinoxalin-2-ylamino)methyl)piperidine-1-carboxylate1420801-29-1C19H26N4O2
- tert-Butyl ((1-(quinoxalin-2-yl)piperidin-2-yl)methyl)carbamate1420801-31-5C19H26N4O2
- tert-Butyl ((1-(quinoxalin-2-yl)piperidin-4-yl)methyl)carbamate1420801-34-8C19H26N4O2
- (R)-tert-Butyl 3-(methyl(quinoxalin-2-yl)amino)piperidine-1-carboxylate1421022-25-4C19H26N4O2
- (S)-tert-Butyl 3-(methyl(quinoxalin-2-yl)amino)piperidine-1-carboxylate1421011-64-4C19H26N4O2
- tert-Butyl 3-(methyl(quinoxalin-2-yl)amino)piperidine-1-carboxylate1420964-30-2C19H26N4O2
- tert-Butyl methyl(1-(quinoxalin-2-yl)piperidin-3-yl)carbamate1420992-23-9C19H26N4O2
- tert-Butyl 4-(methyl(quinoxalin-2-yl)amino)piperidine-1-carboxylate824403-31-8C19H26N4O2
- tert-Butyl methyl(1-(quinoxalin-2-yl)piperidin-4-yl)carbamate1420964-38-0C19H26N4O2
- tert-Butyl 2-((methyl(quinoxalin-2-yl)amino)methyl)pyrrolidine-1-carboxylate1420827-38-8C19H26N4O2
- tert-Butyl 3-((methyl(quinoxalin-2-yl)amino)methyl)pyrrolidine-1-carboxylate1420874-57-2C19H26N4O2
- 1-(1-(1-Aminocyclohexanecarbonyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1573442-03-1C19H26N4O2
- 1-(1-(3-Aminocyclohexanecarbonyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1830637-59-6C19H26N4O2
- 1-(1-(3-(Pyrrolidin-3-yl)propanoyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1837370-93-0C19H26N4O2
- 1-(1-((2S,4S)-2-Methylpiperidine-4-carbonyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1825221-31-5C19H26N4O2
- 1-(1-((1R,2S)-2-(Aminomethyl)cyclopentanecarbonyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one1938857-89-6C19H26N4O2
- 1-(1-(2-((1S,2R)-2-Aminocyclopentyl)acetyl)piperidin-4-yl)-1H-benzo[d]imidazol-2(3H)-one2027195-07-7C19H26N4O2
- 8-Cyclopentyl-2-[3-(hydroxymethyl)piperidin-1-yl]-5-methyl-7H,8H-pyrido[2,3-d]pyrimidin-7-one2548985-17-5C19H26N4O2
Frequently asked questions
What is the molar mass of C19H26N4O2?
The molar mass of C19H26N4O2 is 342.44 g/mol, calculated from standard atomic weights for 19 carbon atoms, 26 hydrogen atoms, 4 nitrogen atoms and 2 oxygen atoms. The monoisotopic mass is 342.2056 Da.
How many compounds have the formula C19H26N4O2?
CompoundList lists 246 compounds with the molecular formula C19H26N4O2, including N-(3-Methyl-1-(2H-1,2,3-triazol-2-yl)butan-2-yl)-4-phenyltetrahydro-2H-pyran-4-carboxamide, N-Cyclopentyl-2-ethoxy-N-{2-[3-(pyridin-4-yl)-1H-pyrazol-1-yl]ethyl}acetamide, 4-(3-(1H-Benzo[d]imidazol-1-yl)pyrrolidin-1-yl)-N-(tert-butyl)-4-oxobutanamide. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C19H26N4O2?
C19H26N4O2 has a degree of unsaturation of 9. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.